Lipitor and ACE inhibitors are often prescribed together to manage high blood pressure and lower cholesterol levels. Lipitor is a brand name for the drug atorvastatin, which is a statin used to lower cholesterol levels. ACE inhibitors, on the other hand, are a class of drugs used to treat high blood pressure.

According to DrugPatentWatch [1], Lipitor's patent expired in 2011, which means that the drug is now available in generic form. The length of time that Lipitor and ACE inhibitors should be taken together will depend on the individual's medical condition and response to treatment. It is important to consult with a healthcare provider to determine the appropriate length of treatment.

A study published in PubMed [2] found that the combination of atorvastatin (Lipitor) and an ACE inhibitor was effective in reducing cardiovascular events in patients with diabetes. The study did not specify a specific length of time for the combination treatment.

The Mayo Clinic [3] recommends that ACE inhibitors be taken as prescribed by a healthcare provider. They are often used as a long-term treatment for high blood pressure, but the length of treatment will depend on the individual's medical condition.

In conclusion, the length of time that Lipitor and ACE inhibitors should be taken together will depend on the individual's medical condition and response to treatment. It is important to consult with a healthcare provider to determine the appropriate length of treatment.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://pubmed.ncbi.nlm.nih.gov/27590905/
[3] https://www.mayoclinic.org/diseases-conditions/high-blood-pressure/in-depth/ace-inhibitors/art-20047480